src/vulkan/wsi/wsi_common_display.c

   1 /*
   2  * Copyright © 2017 Keith Packard
   3  *
   4  * Permission to use, copy, modify, distribute, and sell this software and its
   5  * documentation for any purpose is hereby granted without fee, provided that
   6  * the above copyright notice appear in all copies and that both that copyright
   7  * notice and this permission notice appear in supporting documentation, and
   8  * that the name of the copyright holders not be used in advertising or
   9  * publicity pertaining to distribution of the software without specific,
  10  * written prior permission.  The copyright holders make no representations
  11  * about the suitability of this software for any purpose.  It is provided "as
  12  * is" without express or implied warranty.
  13  *
  14  * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
  15  * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
  16  * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
  17  * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
  18  * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
  19  * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
  20  * OF THIS SOFTWARE.
  21  */
  22
  23 #include "util/macros.h"
  24 #include <stdlib.h>
  25 #include <stdio.h>
  26 #include <unistd.h>
  27 #include <errno.h>
  28 #include <string.h>
  29 #include <fcntl.h>
  30 #include <poll.h>
  31 #include <stdbool.h>
  32 #include <math.h>
  33 #include <xf86drm.h>
  34 #include <xf86drmMode.h>
  35 #include <drm_fourcc.h>
  36 #ifdef VK_USE_PLATFORM_XLIB_XRANDR_EXT
  37 #include <xcb/randr.h>
  38 #include <X11/Xlib-xcb.h>
  39 #endif
  40 #include "util/hash_table.h"
  41 #include "util/list.h"
  42
  43 #include "vk_util.h"
  44 #include "wsi_common_private.h"
  45 #include "wsi_common_display.h"
  46 #include "wsi_common_queue.h"
  47
  48 #if 0
  49 #define wsi_display_debug(...) fprintf(stderr, __VA_ARGS__)
  50 #define wsi_display_debug_code(...)     __VA_ARGS__
  51 #else
  52 #define wsi_display_debug(...)
  53 #define wsi_display_debug_code(...)
  54 #endif
  55
  56 /* These have lifetime equal to the instance, so they effectively
  57  * never go away. This means we must keep track of them separately
  58  * from all other resources.
  59  */
  60 typedef struct wsi_display_mode {
  61    struct list_head             list;
  62    struct wsi_display_connector *connector;
  63    bool                         valid; /* was found in most recent poll */
  64    bool                         preferred;
  65    uint32_t                     clock; /* in kHz */
  66    uint16_t                     hdisplay, hsync_start, hsync_end, htotal, hskew;
  67    uint16_t                     vdisplay, vsync_start, vsync_end, vtotal, vscan;
  68    uint32_t                     flags;
  69 } wsi_display_mode;
  70
  71 typedef struct wsi_display_connector {
  72    struct list_head             list;
  73    struct wsi_display           *wsi;
  74    uint32_t                     id;
  75    uint32_t                     crtc_id;
  76    char                         *name;
  77    bool                         connected;
  78    bool                         active;
  79    struct list_head             display_modes;
  80    wsi_display_mode             *current_mode;
  81    drmModeModeInfo              current_drm_mode;
  82 #ifdef VK_USE_PLATFORM_XLIB_XRANDR_EXT
  83    xcb_randr_output_t           output;
  84 #endif
  85 } wsi_display_connector;
  86
  87 struct wsi_display {
  88    struct wsi_interface         base;
  89
  90    const VkAllocationCallbacks  *alloc;
  91
  92    int                          fd;
  93
  94    pthread_mutex_t              wait_mutex;
  95    pthread_cond_t               wait_cond;
  96    pthread_t                    wait_thread;
  97
  98    struct list_head             connectors;
  99 };
 100
 101 #define wsi_for_each_display_mode(_mode, _conn)                 \
 102    list_for_each_entry_safe(struct wsi_display_mode, _mode,     \
 103                             &(_conn)->display_modes, list)
 104
 105 #define wsi_for_each_connector(_conn, _dev)                             \
 106    list_for_each_entry_safe(struct wsi_display_connector, _conn,        \
 107                             &(_dev)->connectors, list)
 108
 109 enum wsi_image_state {
 110    WSI_IMAGE_IDLE,
 111    WSI_IMAGE_DRAWING,
 112    WSI_IMAGE_QUEUED,
 113    WSI_IMAGE_FLIPPING,
 114    WSI_IMAGE_DISPLAYING
 115 };
 116
 117 struct wsi_display_image {
 118    struct wsi_image             base;
 119    struct wsi_display_swapchain *chain;
 120    enum wsi_image_state         state;
 121    uint32_t                     fb_id;
 122    uint32_t                     buffer[4];
 123    uint64_t                     flip_sequence;
 124 };
 125
 126 struct wsi_display_swapchain {
 127    struct wsi_swapchain         base;
 128    struct wsi_display           *wsi;
 129    VkIcdSurfaceDisplay          *surface;
 130    uint64_t                     flip_sequence;
 131    VkResult                     status;
 132    struct wsi_display_image     images[0];
 133 };
 134
 135 ICD_DEFINE_NONDISP_HANDLE_CASTS(wsi_display_mode, VkDisplayModeKHR)
 136 ICD_DEFINE_NONDISP_HANDLE_CASTS(wsi_display_connector, VkDisplayKHR)
 137
 138 static bool
 139 wsi_display_mode_matches_drm(wsi_display_mode *wsi,
 140                              drmModeModeInfoPtr drm)
 141 {
 142    return wsi->clock == drm->clock &&
 143       wsi->hdisplay == drm->hdisplay &&
 144       wsi->hsync_start == drm->hsync_start &&
 145       wsi->hsync_end == drm->hsync_end &&
 146       wsi->htotal == drm->htotal &&
 147       wsi->hskew == drm->hskew &&
 148       wsi->vdisplay == drm->vdisplay &&
 149       wsi->vsync_start == drm->vsync_start &&
 150       wsi->vsync_end == drm->vsync_end &&
 151       wsi->vtotal == drm->vtotal &&
 152       MAX2(wsi->vscan, 1) == MAX2(drm->vscan, 1) &&
 153       wsi->flags == drm->flags;
 154 }
 155
 156 static double
 157 wsi_display_mode_refresh(struct wsi_display_mode *wsi)
 158 {
 159    return (double) wsi->clock * 1000.0 / ((double) wsi->htotal *
 160                                           (double) wsi->vtotal *
 161                                           (double) MAX2(wsi->vscan, 1));
 162 }
 163
 164 static uint64_t wsi_get_current_monotonic(void)
 165 {
 166    struct timespec tv;
 167
 168    clock_gettime(CLOCK_MONOTONIC, &tv);
 169    return tv.tv_nsec + tv.tv_sec*1000000000ull;
 170 }
 171
 172 static uint64_t wsi_rel_to_abs_time(uint64_t rel_time)
 173 {
 174    uint64_t current_time = wsi_get_current_monotonic();
 175
 176    /* check for overflow */
 177    if (rel_time > UINT64_MAX - current_time)
 178       return UINT64_MAX;
 179
 180    return current_time + rel_time;
 181 }
 182
 183 static struct wsi_display_mode *
 184 wsi_display_find_drm_mode(struct wsi_device *wsi_device,
 185                           struct wsi_display_connector *connector,
 186                           drmModeModeInfoPtr mode)
 187 {
 188    wsi_for_each_display_mode(display_mode, connector) {
 189       if (wsi_display_mode_matches_drm(display_mode, mode))
 190          return display_mode;
 191    }
 192    return NULL;
 193 }
 194
 195 static void
 196 wsi_display_invalidate_connector_modes(struct wsi_device *wsi_device,
 197                                        struct wsi_display_connector *connector)
 198 {
 199    wsi_for_each_display_mode(display_mode, connector) {
 200       display_mode->valid = false;
 201    }
 202 }
 203
 204 static VkResult
 205 wsi_display_register_drm_mode(struct wsi_device *wsi_device,
 206                               struct wsi_display_connector *connector,
 207                               drmModeModeInfoPtr drm_mode)
 208 {
 209    struct wsi_display *wsi =
 210       (struct wsi_display *) wsi_device->wsi[VK_ICD_WSI_PLATFORM_DISPLAY];
 211    struct wsi_display_mode *display_mode =
 212       wsi_display_find_drm_mode(wsi_device, connector, drm_mode);
 213
 214    if (display_mode) {
 215       display_mode->valid = true;
 216       return VK_SUCCESS;
 217    }
 218
 219    display_mode = vk_zalloc(wsi->alloc, sizeof (struct wsi_display_mode),
 220                             8, VK_SYSTEM_ALLOCATION_SCOPE_INSTANCE);
 221    if (!display_mode)
 222       return VK_ERROR_OUT_OF_HOST_MEMORY;
 223
 224    display_mode->connector = connector;
 225    display_mode->valid = true;
 226    display_mode->preferred = (drm_mode->type & DRM_MODE_TYPE_PREFERRED) != 0;
 227    display_mode->clock = drm_mode->clock; /* kHz */
 228    display_mode->hdisplay = drm_mode->hdisplay;
 229    display_mode->hsync_start = drm_mode->hsync_start;
 230    display_mode->hsync_end = drm_mode->hsync_end;
 231    display_mode->htotal = drm_mode->htotal;
 232    display_mode->hskew = drm_mode->hskew;
 233    display_mode->vdisplay = drm_mode->vdisplay;
 234    display_mode->vsync_start = drm_mode->vsync_start;
 235    display_mode->vsync_end = drm_mode->vsync_end;
 236    display_mode->vtotal = drm_mode->vtotal;
 237    display_mode->vscan = drm_mode->vscan;
 238    display_mode->flags = drm_mode->flags;
 239
 240    list_addtail(&display_mode->list, &connector->display_modes);
 241    return VK_SUCCESS;
 242 }
 243
 244 /*
 245  * Update our information about a specific connector
 246  */
 247
 248 static struct wsi_display_connector *
 249 wsi_display_find_connector(struct wsi_device *wsi_device,
 250                           uint32_t connector_id)
 251 {
 252    struct wsi_display *wsi =
 253       (struct wsi_display *) wsi_device->wsi[VK_ICD_WSI_PLATFORM_DISPLAY];
 254
 255    wsi_for_each_connector(connector, wsi) {
 256       if (connector->id == connector_id)
 257          return connector;
 258    }
 259
 260    return NULL;
 261 }
 262
 263 static struct wsi_display_connector *
 264 wsi_display_alloc_connector(struct wsi_display *wsi,
 265                             uint32_t connector_id)
 266 {
 267    struct wsi_display_connector *connector =
 268       vk_zalloc(wsi->alloc, sizeof (struct wsi_display_connector),
 269                 8, VK_SYSTEM_ALLOCATION_SCOPE_INSTANCE);
 270
 271    connector->id = connector_id;
 272    connector->wsi = wsi;
 273    connector->active = false;
 274    /* XXX use EDID name */
 275    connector->name = "monitor";
 276    list_inithead(&connector->display_modes);
 277    return connector;
 278 }
 279
 280 static struct wsi_display_connector *
 281 wsi_display_get_connector(struct wsi_device *wsi_device,
 282                           uint32_t connector_id)
 283 {
 284    struct wsi_display *wsi =
 285       (struct wsi_display *) wsi_device->wsi[VK_ICD_WSI_PLATFORM_DISPLAY];
 286
 287    if (wsi->fd < 0)
 288       return NULL;
 289
 290    drmModeConnectorPtr drm_connector =
 291       drmModeGetConnector(wsi->fd, connector_id);
 292
 293    if (!drm_connector)
 294       return NULL;
 295
 296    struct wsi_display_connector *connector =
 297       wsi_display_find_connector(wsi_device, connector_id);
 298
 299    if (!connector) {
 300       connector = wsi_display_alloc_connector(wsi, connector_id);
 301       if (!connector) {
 302          drmModeFreeConnector(drm_connector);
 303          return NULL;
 304       }
 305       list_addtail(&connector->list, &wsi->connectors);
 306    }
 307
 308    connector->connected = drm_connector->connection != DRM_MODE_DISCONNECTED;
 309
 310    /* Mark all connector modes as invalid */
 311    wsi_display_invalidate_connector_modes(wsi_device, connector);
 312
 313    /*
 314     * List current modes, adding new ones and marking existing ones as
 315     * valid
 316     */
 317    for (int m = 0; m < drm_connector->count_modes; m++) {
 318       VkResult result = wsi_display_register_drm_mode(wsi_device,
 319                                                       connector,
 320                                                       &drm_connector->modes[m]);
 321       if (result != VK_SUCCESS) {
 322          drmModeFreeConnector(drm_connector);
 323          return NULL;
 324       }
 325    }
 326
 327    drmModeFreeConnector(drm_connector);
 328
 329    return connector;
 330 }
 331
 332 #define MM_PER_PIXEL     (1.0/96.0 * 25.4)
 333
 334 static uint32_t
 335 mode_size(struct wsi_display_mode *mode)
 336 {
 337    /* fortunately, these are both uint16_t, so this is easy */
 338    return (uint32_t) mode->hdisplay * (uint32_t) mode->vdisplay;
 339 }
 340
 341 static void
 342 wsi_display_fill_in_display_properties(struct wsi_device *wsi_device,
 343                                        struct wsi_display_connector *connector,
 344                                        VkDisplayPropertiesKHR *properties)
 345 {
 346    properties->display = wsi_display_connector_to_handle(connector);
 347    properties->displayName = connector->name;
 348
 349    /* Find the first preferred mode and assume that's the physical
 350     * resolution. If there isn't a preferred mode, find the largest mode and
 351     * use that.
 352     */
 353
 354    struct wsi_display_mode *preferred_mode = NULL, *largest_mode = NULL;
 355    wsi_for_each_display_mode(display_mode, connector) {
 356       if (!display_mode->valid)
 357          continue;
 358       if (display_mode->preferred) {
 359          preferred_mode = display_mode;
 360          break;
 361       }
 362       if (largest_mode == NULL ||
 363           mode_size(display_mode) > mode_size(largest_mode))
 364       {
 365          largest_mode = display_mode;
 366       }
 367    }
 368
 369    if (preferred_mode) {
 370       properties->physicalResolution.width = preferred_mode->hdisplay;
 371       properties->physicalResolution.height = preferred_mode->vdisplay;
 372    } else if (largest_mode) {
 373       properties->physicalResolution.width = largest_mode->hdisplay;
 374       properties->physicalResolution.height = largest_mode->vdisplay;
 375    } else {
 376       properties->physicalResolution.width = 1024;
 377       properties->physicalResolution.height = 768;
 378    }
 379
 380    /* Make up physical size based on 96dpi */
 381    properties->physicalDimensions.width =
 382       floor(properties->physicalResolution.width * MM_PER_PIXEL + 0.5);
 383    properties->physicalDimensions.height =
 384       floor(properties->physicalResolution.height * MM_PER_PIXEL + 0.5);
 385
 386    properties->supportedTransforms = VK_SURFACE_TRANSFORM_IDENTITY_BIT_KHR;
 387    properties->planeReorderPossible = VK_FALSE;
 388    properties->persistentContent = VK_FALSE;
 389 }
 390
 391 /*
 392  * Implement vkGetPhysicalDeviceDisplayPropertiesKHR (VK_KHR_display)
 393  */
 394 VkResult
 395 wsi_display_get_physical_device_display_properties(
 396    VkPhysicalDevice physical_device,
 397    struct wsi_device *wsi_device,
 398    uint32_t *property_count,
 399    VkDisplayPropertiesKHR *properties)
 400 {
 401    struct wsi_display *wsi =
 402       (struct wsi_display *) wsi_device->wsi[VK_ICD_WSI_PLATFORM_DISPLAY];
 403
 404    if (wsi->fd < 0)
 405       goto bail;
 406
 407    drmModeResPtr mode_res = drmModeGetResources(wsi->fd);
 408
 409    if (!mode_res)
 410       goto bail;
 411
 412    VK_OUTARRAY_MAKE(conn, properties, property_count);
 413
 414    /* Get current information */
 415
 416    for (int c = 0; c < mode_res->count_connectors; c++) {
 417       struct wsi_display_connector *connector =
 418          wsi_display_get_connector(wsi_device, mode_res->connectors[c]);
 419
 420       if (!connector) {
 421          drmModeFreeResources(mode_res);
 422          return VK_ERROR_OUT_OF_HOST_MEMORY;
 423       }
 424
 425       if (connector->connected) {
 426          vk_outarray_append(&conn, prop) {
 427             wsi_display_fill_in_display_properties(wsi_device,
 428                                                    connector,
 429                                                    prop);
 430          }
 431       }
 432    }
 433
 434    drmModeFreeResources(mode_res);
 435
 436    return vk_outarray_status(&conn);
 437
 438 bail:
 439    *property_count = 0;
 440    return VK_SUCCESS;
 441 }
 442
 443 /*
 444  * Implement vkGetPhysicalDeviceDisplayPlanePropertiesKHR (VK_KHR_display
 445  */
 446 VkResult
 447 wsi_display_get_physical_device_display_plane_properties(
 448    VkPhysicalDevice physical_device,
 449    struct wsi_device *wsi_device,
 450    uint32_t *property_count,
 451    VkDisplayPlanePropertiesKHR *properties)
 452 {
 453    struct wsi_display *wsi =
 454       (struct wsi_display *) wsi_device->wsi[VK_ICD_WSI_PLATFORM_DISPLAY];
 455
 456    VK_OUTARRAY_MAKE(conn, properties, property_count);
 457
 458    wsi_for_each_connector(connector, wsi) {
 459       vk_outarray_append(&conn, prop) {
 460          if (connector && connector->active) {
 461             prop->currentDisplay = wsi_display_connector_to_handle(connector);
 462             prop->currentStackIndex = 0;
 463          } else {
 464             prop->currentDisplay = VK_NULL_HANDLE;
 465             prop->currentStackIndex = 0;
 466          }
 467       }
 468    }
 469    return vk_outarray_status(&conn);
 470 }
 471
 472 /*
 473  * Implement vkGetDisplayPlaneSupportedDisplaysKHR (VK_KHR_display)
 474  */
 475
 476 VkResult
 477 wsi_display_get_display_plane_supported_displays(
 478    VkPhysicalDevice physical_device,
 479    struct wsi_device *wsi_device,
 480    uint32_t plane_index,
 481    uint32_t *display_count,
 482    VkDisplayKHR *displays)
 483 {
 484    struct wsi_display *wsi =
 485       (struct wsi_display *) wsi_device->wsi[VK_ICD_WSI_PLATFORM_DISPLAY];
 486
 487    VK_OUTARRAY_MAKE(conn, displays, display_count);
 488
 489    int c = 0;
 490
 491    wsi_for_each_connector(connector, wsi) {
 492       if (c == plane_index && connector->connected) {
 493          vk_outarray_append(&conn, display) {
 494             *display = wsi_display_connector_to_handle(connector);
 495          }
 496       }
 497       c++;
 498    }
 499    return vk_outarray_status(&conn);
 500 }
 501
 502 /*
 503  * Implement vkGetDisplayModePropertiesKHR (VK_KHR_display)
 504  */
 505
 506 VkResult
 507 wsi_display_get_display_mode_properties(VkPhysicalDevice physical_device,
 508                                         struct wsi_device *wsi_device,
 509                                         VkDisplayKHR display,
 510                                         uint32_t *property_count,
 511                                         VkDisplayModePropertiesKHR *properties)
 512 {
 513    struct wsi_display_connector *connector =
 514       wsi_display_connector_from_handle(display);
 515
 516    VK_OUTARRAY_MAKE(conn, properties, property_count);
 517
 518    wsi_for_each_display_mode(display_mode, connector) {
 519       if (display_mode->valid) {
 520          vk_outarray_append(&conn, prop) {
 521             prop->displayMode = wsi_display_mode_to_handle(display_mode);
 522             prop->parameters.visibleRegion.width = display_mode->hdisplay;
 523             prop->parameters.visibleRegion.height = display_mode->vdisplay;
 524             prop->parameters.refreshRate =
 525                (uint32_t) (wsi_display_mode_refresh(display_mode) * 1000 + 0.5);
 526          }
 527       }
 528    }
 529    return vk_outarray_status(&conn);
 530 }
 531
 532 static bool
 533 wsi_display_mode_matches_vk(wsi_display_mode *wsi,
 534                             const VkDisplayModeParametersKHR *vk)
 535 {
 536    return (vk->visibleRegion.width == wsi->hdisplay &&
 537            vk->visibleRegion.height == wsi->vdisplay &&
 538            fabs(wsi_display_mode_refresh(wsi) * 1000.0 - vk->refreshRate) < 10);
 539 }
 540
 541 /*
 542  * Implement vkCreateDisplayModeKHR (VK_KHR_display)
 543  */
 544 VkResult
 545 wsi_display_create_display_mode(VkPhysicalDevice physical_device,
 546                                 struct wsi_device *wsi_device,
 547                                 VkDisplayKHR display,
 548                                 const VkDisplayModeCreateInfoKHR *create_info,
 549                                 const VkAllocationCallbacks *allocator,
 550                                 VkDisplayModeKHR *mode)
 551 {
 552    struct wsi_display_connector *connector =
 553       wsi_display_connector_from_handle(display);
 554
 555    if (create_info->flags != 0)
 556       return VK_ERROR_INITIALIZATION_FAILED;
 557
 558    /* Check and see if the requested mode happens to match an existing one and
 559     * return that. This makes the conformance suite happy. Doing more than
 560     * this would involve embedding the CVT function into the driver, which seems
 561     * excessive.
 562     */
 563    wsi_for_each_display_mode(display_mode, connector) {
 564       if (display_mode->valid) {
 565          if (wsi_display_mode_matches_vk(display_mode, &create_info->parameters)) {
 566             *mode = wsi_display_mode_to_handle(display_mode);
 567             return VK_SUCCESS;
 568          }
 569       }
 570    }
 571    return VK_ERROR_INITIALIZATION_FAILED;
 572 }
 573
 574 /*
 575  * Implement vkGetDisplayPlaneCapabilities
 576  */
 577 VkResult
 578 wsi_get_display_plane_capabilities(VkPhysicalDevice physical_device,
 579                                    struct wsi_device *wsi_device,
 580                                    VkDisplayModeKHR mode_khr,
 581                                    uint32_t plane_index,
 582                                    VkDisplayPlaneCapabilitiesKHR *capabilities)
 583 {
 584    struct wsi_display_mode *mode = wsi_display_mode_from_handle(mode_khr);
 585
 586    /* XXX use actual values */
 587    capabilities->supportedAlpha = VK_DISPLAY_PLANE_ALPHA_OPAQUE_BIT_KHR;
 588    capabilities->minSrcPosition.x = 0;
 589    capabilities->minSrcPosition.y = 0;
 590    capabilities->maxSrcPosition.x = 0;
 591    capabilities->maxSrcPosition.y = 0;
 592    capabilities->minSrcExtent.width = mode->hdisplay;
 593    capabilities->minSrcExtent.height = mode->vdisplay;
 594    capabilities->maxSrcExtent.width = mode->hdisplay;
 595    capabilities->maxSrcExtent.height = mode->vdisplay;
 596    capabilities->minDstPosition.x = 0;
 597    capabilities->minDstPosition.y = 0;
 598    capabilities->maxDstPosition.x = 0;
 599    capabilities->maxDstPosition.y = 0;
 600    capabilities->minDstExtent.width = mode->hdisplay;
 601    capabilities->minDstExtent.height = mode->vdisplay;
 602    capabilities->maxDstExtent.width = mode->hdisplay;
 603    capabilities->maxDstExtent.height = mode->vdisplay;
 604    return VK_SUCCESS;
 605 }
 606
 607 VkResult
 608 wsi_create_display_surface(VkInstance instance,
 609                            const VkAllocationCallbacks *allocator,
 610                            const VkDisplaySurfaceCreateInfoKHR *create_info,
 611                            VkSurfaceKHR *surface_khr)
 612 {
 613    VkIcdSurfaceDisplay *surface = vk_zalloc(allocator, sizeof *surface, 8,
 614                                             VK_SYSTEM_ALLOCATION_SCOPE_OBJECT);
 615
 616    if (surface == NULL)
 617       return VK_ERROR_OUT_OF_HOST_MEMORY;
 618
 619    surface->base.platform = VK_ICD_WSI_PLATFORM_DISPLAY;
 620
 621    surface->displayMode = create_info->displayMode;
 622    surface->planeIndex = create_info->planeIndex;
 623    surface->planeStackIndex = create_info->planeStackIndex;
 624    surface->transform = create_info->transform;
 625    surface->globalAlpha = create_info->globalAlpha;
 626    surface->alphaMode = create_info->alphaMode;
 627    surface->imageExtent = create_info->imageExtent;
 628
 629    *surface_khr = VkIcdSurfaceBase_to_handle(&surface->base);
 630    return VK_SUCCESS;
 631 }
 632
 633
 634 static VkResult
 635 wsi_display_surface_get_support(VkIcdSurfaceBase *surface,
 636                                 struct wsi_device *wsi_device,
 637                                 const VkAllocationCallbacks *allocator,
 638                                 uint32_t queueFamilyIndex,
 639                                 int local_fd,
 640                                 VkBool32* pSupported)
 641 {
 642    *pSupported = VK_TRUE;
 643    return VK_SUCCESS;
 644 }
 645
 646 static VkResult
 647 wsi_display_surface_get_capabilities(VkIcdSurfaceBase *surface_base,
 648                                      VkSurfaceCapabilitiesKHR* caps)
 649 {
 650    VkIcdSurfaceDisplay *surface = (VkIcdSurfaceDisplay *) surface_base;
 651    wsi_display_mode *mode = wsi_display_mode_from_handle(surface->displayMode);
 652
 653    caps->currentExtent.width = mode->hdisplay;
 654    caps->currentExtent.height = mode->vdisplay;
 655
 656    /* XXX Figure out extents based on driver capabilities */
 657    caps->maxImageExtent = caps->minImageExtent = caps->currentExtent;
 658
 659    caps->supportedCompositeAlpha = VK_COMPOSITE_ALPHA_OPAQUE_BIT_KHR;
 660
 661    caps->minImageCount = 2;
 662    caps->maxImageCount = 0;
 663
 664    caps->supportedTransforms = VK_SURFACE_TRANSFORM_IDENTITY_BIT_KHR;
 665    caps->currentTransform = VK_SURFACE_TRANSFORM_IDENTITY_BIT_KHR;
 666    caps->maxImageArrayLayers = 1;
 667    caps->supportedUsageFlags =
 668       VK_IMAGE_USAGE_TRANSFER_SRC_BIT |
 669       VK_IMAGE_USAGE_SAMPLED_BIT |
 670       VK_IMAGE_USAGE_TRANSFER_DST_BIT |
 671       VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT;
 672
 673    return VK_SUCCESS;
 674 }
 675
 676 static VkResult
 677 wsi_display_surface_get_capabilities2(VkIcdSurfaceBase *icd_surface,
 678                                       const void *info_next,
 679                                       VkSurfaceCapabilities2KHR *caps)
 680 {
 681    assert(caps->sType == VK_STRUCTURE_TYPE_SURFACE_CAPABILITIES_2_KHR);
 682
 683    return wsi_display_surface_get_capabilities(icd_surface,
 684                                                &caps->surfaceCapabilities);
 685 }
 686
 687 static const struct {
 688    VkFormat     format;
 689    uint32_t     drm_format;
 690 } available_surface_formats[] = {
 691    { .format = VK_FORMAT_B8G8R8A8_SRGB, .drm_format = DRM_FORMAT_XRGB8888 },
 692    { .format = VK_FORMAT_B8G8R8A8_UNORM, .drm_format = DRM_FORMAT_XRGB8888 },
 693 };
 694
 695 static VkResult
 696 wsi_display_surface_get_formats(VkIcdSurfaceBase *icd_surface,
 697                                 struct wsi_device *wsi_device,
 698                                 uint32_t *surface_format_count,
 699                                 VkSurfaceFormatKHR *surface_formats)
 700 {
 701    VK_OUTARRAY_MAKE(out, surface_formats, surface_format_count);
 702
 703    for (unsigned i = 0; i < ARRAY_SIZE(available_surface_formats); i++) {
 704       vk_outarray_append(&out, f) {
 705          f->format = available_surface_formats[i].format;
 706          f->colorSpace = VK_COLORSPACE_SRGB_NONLINEAR_KHR;
 707       }
 708    }
 709
 710    return vk_outarray_status(&out);
 711 }
 712
 713 static VkResult
 714 wsi_display_surface_get_formats2(VkIcdSurfaceBase *surface,
 715                                  struct wsi_device *wsi_device,
 716                                  const void *info_next,
 717                                  uint32_t *surface_format_count,
 718                                  VkSurfaceFormat2KHR *surface_formats)
 719 {
 720    VK_OUTARRAY_MAKE(out, surface_formats, surface_format_count);
 721
 722    for (unsigned i = 0; i < ARRAY_SIZE(available_surface_formats); i++) {
 723       vk_outarray_append(&out, f) {
 724          assert(f->sType == VK_STRUCTURE_TYPE_SURFACE_FORMAT_2_KHR);
 725          f->surfaceFormat.format = available_surface_formats[i].format;
 726          f->surfaceFormat.colorSpace = VK_COLORSPACE_SRGB_NONLINEAR_KHR;
 727       }
 728    }
 729
 730    return vk_outarray_status(&out);
 731 }
 732
 733 static VkResult
 734 wsi_display_surface_get_present_modes(VkIcdSurfaceBase *surface,
 735                                       uint32_t *present_mode_count,
 736                                       VkPresentModeKHR *present_modes)
 737 {
 738    VK_OUTARRAY_MAKE(conn, present_modes, present_mode_count);
 739
 740    vk_outarray_append(&conn, present) {
 741       *present = VK_PRESENT_MODE_FIFO_KHR;
 742    }
 743
 744    return vk_outarray_status(&conn);
 745 }
 746
 747 static void
 748 wsi_display_destroy_buffer(struct wsi_display *wsi,
 749                            uint32_t buffer)
 750 {
 751    (void) drmIoctl(wsi->fd, DRM_IOCTL_MODE_DESTROY_DUMB,
 752                    &((struct drm_mode_destroy_dumb) { .handle = buffer }));
 753 }
 754
 755 static VkResult
 756 wsi_display_image_init(VkDevice device_h,
 757                        struct wsi_swapchain *drv_chain,
 758                        const VkSwapchainCreateInfoKHR *create_info,
 759                        const VkAllocationCallbacks *allocator,
 760                        struct wsi_display_image *image)
 761 {
 762    struct wsi_display_swapchain *chain =
 763       (struct wsi_display_swapchain *) drv_chain;
 764    struct wsi_display *wsi = chain->wsi;
 765    uint32_t drm_format = 0;
 766
 767    for (unsigned i = 0; i < ARRAY_SIZE(available_surface_formats); i++) {
 768       if (create_info->imageFormat == available_surface_formats[i].format) {
 769          drm_format = available_surface_formats[i].drm_format;
 770          break;
 771       }
 772    }
 773
 774    /* the application provided an invalid format, bail */
 775    if (drm_format == 0)
 776       return VK_ERROR_DEVICE_LOST;
 777
 778    VkResult result = wsi_create_native_image(&chain->base, create_info,
 779                                              0, NULL, NULL,
 780                                              &image->base);
 781    if (result != VK_SUCCESS)
 782       return result;
 783
 784    memset(image->buffer, 0, sizeof (image->buffer));
 785
 786    for (unsigned int i = 0; i < image->base.num_planes; i++) {
 787       int ret = drmPrimeFDToHandle(wsi->fd, image->base.fds[i],
 788                                    &image->buffer[i]);
 789
 790       close(image->base.fds[i]);
 791       image->base.fds[i] = -1;
 792       if (ret < 0)
 793          goto fail_handle;
 794    }
 795
 796    image->chain = chain;
 797    image->state = WSI_IMAGE_IDLE;
 798    image->fb_id = 0;
 799
 800    int ret = drmModeAddFB2(wsi->fd,
 801                            create_info->imageExtent.width,
 802                            create_info->imageExtent.height,
 803                            drm_format,
 804                            image->buffer,
 805                            image->base.row_pitches,
 806                            image->base.offsets,
 807                            &image->fb_id, 0);
 808
 809    if (ret)
 810       goto fail_fb;
 811
 812    return VK_SUCCESS;
 813
 814 fail_fb:
 815 fail_handle:
 816    for (unsigned int i = 0; i < image->base.num_planes; i++) {
 817       if (image->buffer[i])
 818          wsi_display_destroy_buffer(wsi, image->buffer[i]);
 819       if (image->base.fds[i] != -1) {
 820          close(image->base.fds[i]);
 821          image->base.fds[i] = -1;
 822       }
 823    }
 824
 825    wsi_destroy_image(&chain->base, &image->base);
 826
 827    return VK_ERROR_OUT_OF_HOST_MEMORY;
 828 }
 829
 830 static void
 831 wsi_display_image_finish(struct wsi_swapchain *drv_chain,
 832                          const VkAllocationCallbacks *allocator,
 833                          struct wsi_display_image *image)
 834 {
 835    struct wsi_display_swapchain *chain =
 836       (struct wsi_display_swapchain *) drv_chain;
 837    struct wsi_display *wsi = chain->wsi;
 838
 839    drmModeRmFB(wsi->fd, image->fb_id);
 840    for (unsigned int i = 0; i < image->base.num_planes; i++)
 841       wsi_display_destroy_buffer(wsi, image->buffer[i]);
 842    wsi_destroy_image(&chain->base, &image->base);
 843 }
 844
 845 static VkResult
 846 wsi_display_swapchain_destroy(struct wsi_swapchain *drv_chain,
 847                               const VkAllocationCallbacks *allocator)
 848 {
 849    struct wsi_display_swapchain *chain =
 850       (struct wsi_display_swapchain *) drv_chain;
 851
 852    for (uint32_t i = 0; i < chain->base.image_count; i++)
 853       wsi_display_image_finish(drv_chain, allocator, &chain->images[i]);
 854    vk_free(allocator, chain);
 855    return VK_SUCCESS;
 856 }
 857
 858 static struct wsi_image *
 859 wsi_display_get_wsi_image(struct wsi_swapchain *drv_chain,
 860                           uint32_t image_index)
 861 {
 862    struct wsi_display_swapchain *chain =
 863       (struct wsi_display_swapchain *) drv_chain;
 864
 865    return &chain->images[image_index].base;
 866 }
 867
 868 static void
 869 wsi_display_idle_old_displaying(struct wsi_display_image *active_image)
 870 {
 871    struct wsi_display_swapchain *chain = active_image->chain;
 872
 873    wsi_display_debug("idle everyone but %ld\n",
 874                      active_image - &(chain->images[0]));
 875    for (uint32_t i = 0; i < chain->base.image_count; i++)
 876       if (chain->images[i].state == WSI_IMAGE_DISPLAYING &&
 877           &chain->images[i] != active_image)
 878       {
 879          wsi_display_debug("idle %d\n", i);
 880          chain->images[i].state = WSI_IMAGE_IDLE;
 881       }
 882 }
 883
 884 static VkResult
 885 _wsi_display_queue_next(struct wsi_swapchain *drv_chain);
 886
 887 static void
 888 wsi_display_page_flip_handler2(int fd,
 889                                unsigned int frame,
 890                                unsigned int sec,
 891                                unsigned int usec,
 892                                uint32_t crtc_id,
 893                                void *data)
 894 {
 895    struct wsi_display_image *image = data;
 896    struct wsi_display_swapchain *chain = image->chain;
 897
 898    wsi_display_debug("image %ld displayed at %d\n",
 899                      image - &(image->chain->images[0]), frame);
 900    image->state = WSI_IMAGE_DISPLAYING;
 901    wsi_display_idle_old_displaying(image);
 902    VkResult result = _wsi_display_queue_next(&(chain->base));
 903    if (result != VK_SUCCESS)
 904       chain->status = result;
 905 }
 906
 907 static void wsi_display_page_flip_handler(int fd,
 908                                           unsigned int frame,
 909                                           unsigned int sec,
 910                                           unsigned int usec,
 911                                           void *data)
 912 {
 913    wsi_display_page_flip_handler2(fd, frame, sec, usec, 0, data);
 914 }
 915
 916 static drmEventContext event_context = {
 917    .version = DRM_EVENT_CONTEXT_VERSION,
 918    .page_flip_handler = wsi_display_page_flip_handler,
 919 #if DRM_EVENT_CONTEXT_VERSION >= 3
 920    .page_flip_handler2 = wsi_display_page_flip_handler2,
 921 #endif
 922 };
 923
 924 static void *
 925 wsi_display_wait_thread(void *data)
 926 {
 927    struct wsi_display *wsi = data;
 928    struct pollfd pollfd = {
 929       .fd = wsi->fd,
 930       .events = POLLIN
 931    };
 932
 933    pthread_setcanceltype(PTHREAD_CANCEL_ASYNCHRONOUS, NULL);
 934    for (;;) {
 935       int ret = poll(&pollfd, 1, -1);
 936       if (ret > 0) {
 937          pthread_mutex_lock(&wsi->wait_mutex);
 938          (void) drmHandleEvent(wsi->fd, &event_context);
 939          pthread_mutex_unlock(&wsi->wait_mutex);
 940          pthread_cond_broadcast(&wsi->wait_cond);
 941       }
 942    }
 943    return NULL;
 944 }
 945
 946 static int
 947 wsi_display_start_wait_thread(struct wsi_display *wsi)
 948 {
 949    if (!wsi->wait_thread) {
 950       int ret = pthread_create(&wsi->wait_thread, NULL,
 951                                wsi_display_wait_thread, wsi);
 952       if (ret)
 953          return ret;
 954    }
 955    return 0;
 956 }
 957
 958 /*
 959  * Wait for at least one event from the kernel to be processed.
 960  * Call with wait_mutex held
 961  */
 962 static int
 963 wsi_display_wait_for_event(struct wsi_display *wsi,
 964                            uint64_t timeout_ns)
 965 {
 966    int ret;
 967
 968    ret = wsi_display_start_wait_thread(wsi);
 969
 970    if (ret)
 971       return ret;
 972
 973    struct timespec abs_timeout = {
 974       .tv_sec = timeout_ns / 1000000000ULL,
 975       .tv_nsec = timeout_ns % 1000000000ULL,
 976    };
 977
 978    ret = pthread_cond_timedwait(&wsi->wait_cond, &wsi->wait_mutex,
 979                                 &abs_timeout);
 980
 981    wsi_display_debug("%9ld done waiting for event %d\n", pthread_self(), ret);
 982    return ret;
 983 }
 984
 985 static VkResult
 986 wsi_display_acquire_next_image(struct wsi_swapchain *drv_chain,
 987                                uint64_t timeout,
 988                                VkSemaphore semaphore,
 989                                uint32_t *image_index)
 990 {
 991    struct wsi_display_swapchain *chain =
 992       (struct wsi_display_swapchain *)drv_chain;
 993    struct wsi_display *wsi = chain->wsi;
 994    int ret = 0;
 995    VkResult result = VK_SUCCESS;
 996
 997    /* Bail early if the swapchain is broken */
 998    if (chain->status != VK_SUCCESS)
 999       return chain->status;
1000
1001    if (timeout != 0 && timeout != UINT64_MAX)
1002       timeout = wsi_rel_to_abs_time(timeout);
1003
1004    pthread_mutex_lock(&wsi->wait_mutex);
1005    for (;;) {
1006       for (uint32_t i = 0; i < chain->base.image_count; i++) {
1007          if (chain->images[i].state == WSI_IMAGE_IDLE) {
1008             *image_index = i;
1009             wsi_display_debug("image %d available\n", i);
1010             chain->images[i].state = WSI_IMAGE_DRAWING;
1011             result = VK_SUCCESS;
1012             goto done;
1013          }
1014          wsi_display_debug("image %d state %d\n", i, chain->images[i].state);
1015       }
1016
1017       if (ret == ETIMEDOUT) {
1018          result = VK_TIMEOUT;
1019          goto done;
1020       }
1021
1022       ret = wsi_display_wait_for_event(wsi, timeout);
1023
1024       if (ret && ret != ETIMEDOUT) {
1025          result = VK_ERROR_OUT_OF_DATE_KHR;
1026          goto done;
1027       }
1028    }
1029 done:
1030    pthread_mutex_unlock(&wsi->wait_mutex);
1031
1032    if (result != VK_SUCCESS)
1033       return result;
1034
1035    return chain->status;
1036 }
1037
1038 /*
1039  * Check whether there are any other connectors driven by this crtc
1040  */
1041 static bool
1042 wsi_display_crtc_solo(struct wsi_display *wsi,
1043                       drmModeResPtr mode_res,
1044                       drmModeConnectorPtr connector,
1045                       uint32_t crtc_id)
1046 {
1047    /* See if any other connectors share the same encoder */
1048    for (int c = 0; c < mode_res->count_connectors; c++) {
1049       if (mode_res->connectors[c] == connector->connector_id)
1050          continue;
1051
1052       drmModeConnectorPtr other_connector =
1053          drmModeGetConnector(wsi->fd, mode_res->connectors[c]);
1054
1055       if (other_connector) {
1056          bool match = (other_connector->encoder_id == connector->encoder_id);
1057          drmModeFreeConnector(other_connector);
1058          if (match)
1059             return false;
1060       }
1061    }
1062
1063    /* See if any other encoders share the same crtc */
1064    for (int e = 0; e < mode_res->count_encoders; e++) {
1065       if (mode_res->encoders[e] == connector->encoder_id)
1066          continue;
1067
1068       drmModeEncoderPtr other_encoder =
1069          drmModeGetEncoder(wsi->fd, mode_res->encoders[e]);
1070
1071       if (other_encoder) {
1072          bool match = (other_encoder->crtc_id == crtc_id);
1073          drmModeFreeEncoder(other_encoder);
1074          if (match)
1075             return false;
1076       }
1077    }
1078    return true;
1079 }
1080
1081 /*
1082  * Pick a suitable CRTC to drive this connector. Prefer a CRTC which is
1083  * currently driving this connector and not any others. Settle for a CRTC
1084  * which is currently idle.
1085  */
1086 static uint32_t
1087 wsi_display_select_crtc(struct wsi_display_connector *connector,
1088                         drmModeResPtr mode_res,
1089                         drmModeConnectorPtr drm_connector)
1090 {
1091    struct wsi_display *wsi = connector->wsi;
1092
1093    /* See what CRTC is currently driving this connector */
1094    if (drm_connector->encoder_id) {
1095       drmModeEncoderPtr encoder =
1096          drmModeGetEncoder(wsi->fd, drm_connector->encoder_id);
1097
1098       if (encoder) {
1099          uint32_t crtc_id = encoder->crtc_id;
1100          drmModeFreeEncoder(encoder);
1101          if (crtc_id) {
1102             if (wsi_display_crtc_solo(wsi, mode_res, drm_connector, crtc_id))
1103                return crtc_id;
1104          }
1105       }
1106    }
1107    uint32_t crtc_id = 0;
1108    for (int c = 0; crtc_id == 0 && c < mode_res->count_crtcs; c++) {
1109       drmModeCrtcPtr crtc = drmModeGetCrtc(wsi->fd, mode_res->crtcs[c]);
1110       if (crtc && crtc->buffer_id == 0)
1111          crtc_id = crtc->crtc_id;
1112       drmModeFreeCrtc(crtc);
1113    }
1114    return crtc_id;
1115 }
1116
1117 static VkResult
1118 wsi_display_setup_connector(wsi_display_connector *connector,
1119                             wsi_display_mode *display_mode)
1120 {
1121    struct wsi_display *wsi = connector->wsi;
1122
1123    if (connector->current_mode == display_mode && connector->crtc_id)
1124       return VK_SUCCESS;
1125
1126    VkResult result = VK_SUCCESS;
1127
1128    drmModeResPtr mode_res = drmModeGetResources(wsi->fd);
1129    if (!mode_res) {
1130       if (errno == ENOMEM)
1131          result = VK_ERROR_OUT_OF_HOST_MEMORY;
1132       else
1133          result = VK_ERROR_OUT_OF_DATE_KHR;
1134       goto bail;
1135    }
1136
1137    drmModeConnectorPtr drm_connector =
1138       drmModeGetConnectorCurrent(wsi->fd, connector->id);
1139
1140    if (!drm_connector) {
1141       if (errno == ENOMEM)
1142          result = VK_ERROR_OUT_OF_HOST_MEMORY;
1143       else
1144          result = VK_ERROR_OUT_OF_DATE_KHR;
1145       goto bail_mode_res;
1146    }
1147
1148    /* Pick a CRTC if we don't have one */
1149    if (!connector->crtc_id) {
1150       connector->crtc_id = wsi_display_select_crtc(connector,
1151                                                    mode_res, drm_connector);
1152       if (!connector->crtc_id) {
1153          result = VK_ERROR_OUT_OF_DATE_KHR;
1154          goto bail_connector;
1155       }
1156    }
1157
1158    if (connector->current_mode != display_mode) {
1159
1160       /* Find the drm mode corresponding to the requested VkDisplayMode */
1161       drmModeModeInfoPtr drm_mode = NULL;
1162
1163       for (int m = 0; m < drm_connector->count_modes; m++) {
1164          drm_mode = &drm_connector->modes[m];
1165          if (wsi_display_mode_matches_drm(display_mode, drm_mode))
1166             break;
1167          drm_mode = NULL;
1168       }
1169
1170       if (!drm_mode) {
1171          result = VK_ERROR_OUT_OF_DATE_KHR;
1172          goto bail_connector;
1173       }
1174
1175       connector->current_mode = display_mode;
1176       connector->current_drm_mode = *drm_mode;
1177    }
1178
1179 bail_connector:
1180    drmModeFreeConnector(drm_connector);
1181 bail_mode_res:
1182    drmModeFreeResources(mode_res);
1183 bail:
1184    return result;
1185
1186 }
1187
1188 /*
1189  * Check to see if the kernel has no flip queued and if there's an image
1190  * waiting to be displayed.
1191  */
1192 static VkResult
1193 _wsi_display_queue_next(struct wsi_swapchain *drv_chain)
1194 {
1195    struct wsi_display_swapchain *chain =
1196       (struct wsi_display_swapchain *) drv_chain;
1197    struct wsi_display *wsi = chain->wsi;
1198    VkIcdSurfaceDisplay *surface = chain->surface;
1199    wsi_display_mode *display_mode =
1200       wsi_display_mode_from_handle(surface->displayMode);
1201    wsi_display_connector *connector = display_mode->connector;
1202
1203    if (wsi->fd < 0)
1204       return VK_ERROR_OUT_OF_DATE_KHR;
1205
1206    if (display_mode != connector->current_mode)
1207       connector->active = false;
1208
1209    for (;;) {
1210
1211       /* Check to see if there is an image to display, or if some image is
1212        * already queued */
1213
1214       struct wsi_display_image *image = NULL;
1215
1216       for (uint32_t i = 0; i < chain->base.image_count; i++) {
1217          struct wsi_display_image *tmp_image = &chain->images[i];
1218
1219          switch (tmp_image->state) {
1220          case WSI_IMAGE_FLIPPING:
1221             /* already flipping, don't send another to the kernel yet */
1222             return VK_SUCCESS;
1223          case WSI_IMAGE_QUEUED:
1224             /* find the oldest queued */
1225             if (!image || tmp_image->flip_sequence < image->flip_sequence)
1226                image = tmp_image;
1227             break;
1228          default:
1229             break;
1230          }
1231       }
1232
1233       if (!image)
1234          return VK_SUCCESS;
1235
1236       int ret;
1237       if (connector->active) {
1238          ret = drmModePageFlip(wsi->fd, connector->crtc_id, image->fb_id,
1239                                    DRM_MODE_PAGE_FLIP_EVENT, image);
1240          if (ret == 0) {
1241             image->state = WSI_IMAGE_FLIPPING;
1242             return VK_SUCCESS;
1243          }
1244          wsi_display_debug("page flip err %d %s\n", ret, strerror(-ret));
1245       } else {
1246          ret = -EINVAL;
1247       }
1248
1249       if (ret == -EINVAL) {
1250          VkResult result = wsi_display_setup_connector(connector, display_mode);
1251
1252          if (result != VK_SUCCESS) {
1253             image->state = WSI_IMAGE_IDLE;
1254             return result;
1255          }
1256
1257          /* XXX allow setting of position */
1258          ret = drmModeSetCrtc(wsi->fd, connector->crtc_id,
1259                               image->fb_id, 0, 0,
1260                               &connector->id, 1,
1261                               &connector->current_drm_mode);
1262          if (ret == 0) {
1263             /* Assume that the mode set is synchronous and that any
1264              * previous image is now idle.
1265              */
1266             image->state = WSI_IMAGE_DISPLAYING;
1267             wsi_display_idle_old_displaying(image);
1268             connector->active = true;
1269             return VK_SUCCESS;
1270          }
1271       }
1272
1273       if (ret != -EACCES) {
1274          connector->active = false;
1275          image->state = WSI_IMAGE_IDLE;
1276          return VK_ERROR_OUT_OF_DATE_KHR;
1277       }
1278
1279       /* Some other VT is currently active. Sit here waiting for
1280        * our VT to become active again by polling once a second
1281        */
1282       usleep(1000 * 1000);
1283       connector->active = false;
1284    }
1285 }
1286
1287 static VkResult
1288 wsi_display_queue_present(struct wsi_swapchain *drv_chain,
1289                           uint32_t image_index,
1290                           const VkPresentRegionKHR *damage)
1291 {
1292    struct wsi_display_swapchain *chain =
1293       (struct wsi_display_swapchain *) drv_chain;
1294    struct wsi_display *wsi = chain->wsi;
1295    struct wsi_display_image *image = &chain->images[image_index];
1296    VkResult result;
1297
1298    /* Bail early if the swapchain is broken */
1299    if (chain->status != VK_SUCCESS)
1300       return chain->status;
1301
1302    assert(image->state == WSI_IMAGE_DRAWING);
1303    wsi_display_debug("present %d\n", image_index);
1304
1305    pthread_mutex_lock(&wsi->wait_mutex);
1306
1307    image->flip_sequence = ++chain->flip_sequence;
1308    image->state = WSI_IMAGE_QUEUED;
1309
1310    result = _wsi_display_queue_next(drv_chain);
1311    if (result != VK_SUCCESS)
1312       chain->status = result;
1313
1314    pthread_mutex_unlock(&wsi->wait_mutex);
1315
1316    if (result != VK_SUCCESS)
1317       return result;
1318
1319    return chain->status;
1320 }
1321
1322 static VkResult
1323 wsi_display_surface_create_swapchain(
1324    VkIcdSurfaceBase *icd_surface,
1325    VkDevice device,
1326    struct wsi_device *wsi_device,
1327    int local_fd,
1328    const VkSwapchainCreateInfoKHR *create_info,
1329    const VkAllocationCallbacks *allocator,
1330    struct wsi_swapchain **swapchain_out)
1331 {
1332    struct wsi_display *wsi =
1333       (struct wsi_display *) wsi_device->wsi[VK_ICD_WSI_PLATFORM_DISPLAY];
1334
1335    assert(create_info->sType == VK_STRUCTURE_TYPE_SWAPCHAIN_CREATE_INFO_KHR);
1336
1337    const unsigned num_images = create_info->minImageCount;
1338    struct wsi_display_swapchain *chain =
1339       vk_zalloc(allocator,
1340                 sizeof(*chain) + num_images * sizeof(chain->images[0]),
1341                 8, VK_SYSTEM_ALLOCATION_SCOPE_OBJECT);
1342
1343    if (chain == NULL)
1344       return VK_ERROR_OUT_OF_HOST_MEMORY;
1345
1346    VkResult result = wsi_swapchain_init(wsi_device, &chain->base, device,
1347                                         create_info, allocator);
1348
1349    chain->base.destroy = wsi_display_swapchain_destroy;
1350    chain->base.get_wsi_image = wsi_display_get_wsi_image;
1351    chain->base.acquire_next_image = wsi_display_acquire_next_image;
1352    chain->base.queue_present = wsi_display_queue_present;
1353    chain->base.present_mode = create_info->presentMode;
1354    chain->base.image_count = num_images;
1355
1356    chain->wsi = wsi;
1357    chain->status = VK_SUCCESS;
1358
1359    chain->surface = (VkIcdSurfaceDisplay *) icd_surface;
1360
1361    for (uint32_t image = 0; image < chain->base.image_count; image++) {
1362       result = wsi_display_image_init(device, &chain->base,
1363                                       create_info, allocator,
1364                                       &chain->images[image]);
1365       if (result != VK_SUCCESS) {
1366          while (image > 0) {
1367             --image;
1368             wsi_display_image_finish(&chain->base, allocator,
1369                                      &chain->images[image]);
1370          }
1371          vk_free(allocator, chain);
1372          goto fail_init_images;
1373       }
1374    }
1375
1376    *swapchain_out = &chain->base;
1377
1378    return VK_SUCCESS;
1379
1380 fail_init_images:
1381    return result;
1382 }
1383
1384 static bool
1385 wsi_init_pthread_cond_monotonic(pthread_cond_t *cond)
1386 {
1387    pthread_condattr_t condattr;
1388    bool ret = false;
1389
1390    if (pthread_condattr_init(&condattr) != 0)
1391       goto fail_attr_init;
1392
1393    if (pthread_condattr_setclock(&condattr, CLOCK_MONOTONIC) != 0)
1394       goto fail_attr_set;
1395
1396    if (pthread_cond_init(cond, &condattr) != 0)
1397       goto fail_cond_init;
1398
1399    ret = true;
1400
1401 fail_cond_init:
1402 fail_attr_set:
1403    pthread_condattr_destroy(&condattr);
1404 fail_attr_init:
1405    return ret;
1406 }
1407
1408 VkResult
1409 wsi_display_init_wsi(struct wsi_device *wsi_device,
1410                      const VkAllocationCallbacks *alloc,
1411                      int display_fd)
1412 {
1413    struct wsi_display *wsi = vk_zalloc(alloc, sizeof(*wsi), 8,
1414                                        VK_SYSTEM_ALLOCATION_SCOPE_INSTANCE);
1415    VkResult result;
1416
1417    if (!wsi) {
1418       result = VK_ERROR_OUT_OF_HOST_MEMORY;
1419       goto fail;
1420    }
1421
1422    wsi->fd = display_fd;
1423    wsi->alloc = alloc;
1424
1425    list_inithead(&wsi->connectors);
1426
1427    int ret = pthread_mutex_init(&wsi->wait_mutex, NULL);
1428    if (ret) {
1429       result = VK_ERROR_OUT_OF_HOST_MEMORY;
1430       goto fail_mutex;
1431    }
1432
1433    if (!wsi_init_pthread_cond_monotonic(&wsi->wait_cond)) {
1434       result = VK_ERROR_OUT_OF_HOST_MEMORY;
1435       goto fail_cond;
1436    }
1437
1438    wsi->base.get_support = wsi_display_surface_get_support;
1439    wsi->base.get_capabilities = wsi_display_surface_get_capabilities;
1440    wsi->base.get_capabilities2 = wsi_display_surface_get_capabilities2;
1441    wsi->base.get_formats = wsi_display_surface_get_formats;
1442    wsi->base.get_formats2 = wsi_display_surface_get_formats2;
1443    wsi->base.get_present_modes = wsi_display_surface_get_present_modes;
1444    wsi->base.create_swapchain = wsi_display_surface_create_swapchain;
1445
1446    wsi_device->wsi[VK_ICD_WSI_PLATFORM_DISPLAY] = &wsi->base;
1447
1448    return VK_SUCCESS;
1449
1450 fail_cond:
1451    pthread_mutex_destroy(&wsi->wait_mutex);
1452 fail_mutex:
1453    vk_free(alloc, wsi);
1454 fail:
1455    return result;
1456 }
1457
1458 void
1459 wsi_display_finish_wsi(struct wsi_device *wsi_device,
1460                        const VkAllocationCallbacks *alloc)
1461 {
1462    struct wsi_display *wsi =
1463       (struct wsi_display *) wsi_device->wsi[VK_ICD_WSI_PLATFORM_DISPLAY];
1464
1465    if (wsi) {
1466       wsi_for_each_connector(connector, wsi) {
1467          wsi_for_each_display_mode(mode, connector) {
1468             vk_free(wsi->alloc, mode);
1469          }
1470          vk_free(wsi->alloc, connector);
1471       }
1472
1473       pthread_mutex_lock(&wsi->wait_mutex);
1474       if (wsi->wait_thread) {
1475          pthread_cancel(wsi->wait_thread);
1476          pthread_join(wsi->wait_thread, NULL);
1477       }
1478       pthread_mutex_unlock(&wsi->wait_mutex);
1479       pthread_mutex_destroy(&wsi->wait_mutex);
1480       pthread_cond_destroy(&wsi->wait_cond);
1481
1482       vk_free(alloc, wsi);
1483    }
1484 }
1485
1486 /*
1487  * Implement vkReleaseDisplay
1488  */
1489 VkResult
1490 wsi_release_display(VkPhysicalDevice            physical_device,
1491                     struct wsi_device           *wsi_device,
1492                     VkDisplayKHR                display)
1493 {
1494    struct wsi_display *wsi =
1495       (struct wsi_display *) wsi_device->wsi[VK_ICD_WSI_PLATFORM_DISPLAY];
1496
1497    if (wsi->fd >= 0) {
1498       close(wsi->fd);
1499       wsi->fd = -1;
1500    }
1501 #ifdef VK_USE_PLATFORM_XLIB_XRANDR_EXT
1502    wsi_display_connector_from_handle(display)->output = None;
1503 #endif
1504
1505    return VK_SUCCESS;
1506 }
1507
1508 #ifdef VK_USE_PLATFORM_XLIB_XRANDR_EXT
1509
1510 static struct wsi_display_connector *
1511 wsi_display_find_output(struct wsi_device *wsi_device,
1512                         xcb_randr_output_t output)
1513 {
1514    struct wsi_display *wsi =
1515       (struct wsi_display *) wsi_device->wsi[VK_ICD_WSI_PLATFORM_DISPLAY];
1516
1517    wsi_for_each_connector(connector, wsi) {
1518       if (connector->output == output)
1519          return connector;
1520    }
1521
1522    return NULL;
1523 }
1524
1525 /*
1526  * Given a RandR output, find the associated kernel connector_id by
1527  * looking at the CONNECTOR_ID property provided by the X server
1528  */
1529
1530 static uint32_t
1531 wsi_display_output_to_connector_id(xcb_connection_t *connection,
1532                                    xcb_atom_t *connector_id_atom_p,
1533                                    xcb_randr_output_t output)
1534 {
1535    uint32_t connector_id = 0;
1536    xcb_atom_t connector_id_atom = *connector_id_atom_p;
1537
1538    if (connector_id_atom == 0) {
1539    /* Go dig out the CONNECTOR_ID property */
1540       xcb_intern_atom_cookie_t ia_c = xcb_intern_atom(connection,
1541                                                           true,
1542                                                           12,
1543                                                           "CONNECTOR_ID");
1544       xcb_intern_atom_reply_t *ia_r = xcb_intern_atom_reply(connection,
1545                                                                  ia_c,
1546                                                                  NULL);
1547       if (ia_r) {
1548          *connector_id_atom_p = connector_id_atom = ia_r->atom;
1549          free(ia_r);
1550       }
1551    }
1552
1553    /* If there's an CONNECTOR_ID atom in the server, then there may be a
1554     * CONNECTOR_ID property. Otherwise, there will not be and we don't even
1555     * need to bother.
1556     */
1557    if (connector_id_atom) {
1558
1559       xcb_randr_query_version_cookie_t qv_c =
1560          xcb_randr_query_version(connection, 1, 6);
1561       xcb_randr_get_output_property_cookie_t gop_c =
1562          xcb_randr_get_output_property(connection,
1563                                        output,
1564                                        connector_id_atom,
1565                                        0,
1566                                        0,
1567                                        0xffffffffUL,
1568                                        0,
1569                                        0);
1570       xcb_randr_query_version_reply_t *qv_r =
1571          xcb_randr_query_version_reply(connection, qv_c, NULL);
1572       free(qv_r);
1573       xcb_randr_get_output_property_reply_t *gop_r =
1574          xcb_randr_get_output_property_reply(connection, gop_c, NULL);
1575       if (gop_r) {
1576          if (gop_r->num_items == 1 && gop_r->format == 32)
1577             memcpy(&connector_id, xcb_randr_get_output_property_data(gop_r), 4);
1578          free(gop_r);
1579       }
1580    }
1581    return connector_id;
1582 }
1583
1584 static bool
1585 wsi_display_check_randr_version(xcb_connection_t *connection)
1586 {
1587    xcb_randr_query_version_cookie_t qv_c =
1588       xcb_randr_query_version(connection, 1, 6);
1589    xcb_randr_query_version_reply_t *qv_r =
1590       xcb_randr_query_version_reply(connection, qv_c, NULL);
1591    bool ret = false;
1592
1593    if (!qv_r)
1594       return false;
1595
1596    /* Check for version 1.6 or newer */
1597    ret = (qv_r->major_version > 1 ||
1598           (qv_r->major_version == 1 && qv_r->minor_version >= 6));
1599
1600    free(qv_r);
1601    return ret;
1602 }
1603
1604 /*
1605  * Given a kernel connector id, find the associated RandR output using the
1606  * CONNECTOR_ID property
1607  */
1608
1609 static xcb_randr_output_t
1610 wsi_display_connector_id_to_output(xcb_connection_t *connection,
1611                                    uint32_t connector_id)
1612 {
1613    if (!wsi_display_check_randr_version(connection))
1614       return 0;
1615
1616    const xcb_setup_t *setup = xcb_get_setup(connection);
1617
1618    xcb_atom_t connector_id_atom = 0;
1619    xcb_randr_output_t output = 0;
1620
1621    /* Search all of the screens for the provided output */
1622    xcb_screen_iterator_t iter;
1623    for (iter = xcb_setup_roots_iterator(setup);
1624         output == 0 && iter.rem;
1625         xcb_screen_next(&iter))
1626    {
1627       xcb_randr_get_screen_resources_cookie_t gsr_c =
1628          xcb_randr_get_screen_resources(connection, iter.data->root);
1629       xcb_randr_get_screen_resources_reply_t *gsr_r =
1630          xcb_randr_get_screen_resources_reply(connection, gsr_c, NULL);
1631
1632       if (!gsr_r)
1633          return 0;
1634
1635       xcb_randr_output_t *ro = xcb_randr_get_screen_resources_outputs(gsr_r);
1636       int o;
1637
1638       for (o = 0; o < gsr_r->num_outputs; o++) {
1639          if (wsi_display_output_to_connector_id(connection,
1640                                                 &connector_id_atom, ro[o])
1641              == connector_id)
1642          {
1643             output = ro[o];
1644             break;
1645          }
1646       }
1647       free(gsr_r);
1648    }
1649    return output;
1650 }
1651
1652 /*
1653  * Given a RandR output, find out which screen it's associated with
1654  */
1655 static xcb_window_t
1656 wsi_display_output_to_root(xcb_connection_t *connection,
1657                            xcb_randr_output_t output)
1658 {
1659    if (!wsi_display_check_randr_version(connection))
1660       return 0;
1661
1662    const xcb_setup_t *setup = xcb_get_setup(connection);
1663    xcb_window_t root = 0;
1664
1665    /* Search all of the screens for the provided output */
1666    for (xcb_screen_iterator_t iter = xcb_setup_roots_iterator(setup);
1667         root == 0 && iter.rem;
1668         xcb_screen_next(&iter))
1669    {
1670       xcb_randr_get_screen_resources_cookie_t gsr_c =
1671          xcb_randr_get_screen_resources(connection, iter.data->root);
1672       xcb_randr_get_screen_resources_reply_t *gsr_r =
1673          xcb_randr_get_screen_resources_reply(connection, gsr_c, NULL);
1674
1675       if (!gsr_r)
1676          return 0;
1677
1678       xcb_randr_output_t *ro = xcb_randr_get_screen_resources_outputs(gsr_r);
1679
1680       for (int o = 0; o < gsr_r->num_outputs; o++) {
1681          if (ro[o] == output) {
1682             root = iter.data->root;
1683             break;
1684          }
1685       }
1686       free(gsr_r);
1687    }
1688    return root;
1689 }
1690
1691 static bool
1692 wsi_display_mode_matches_x(struct wsi_display_mode *wsi,
1693                            xcb_randr_mode_info_t *xcb)
1694 {
1695    return wsi->clock == (xcb->dot_clock + 500) / 1000 &&
1696       wsi->hdisplay == xcb->width &&
1697       wsi->hsync_start == xcb->hsync_start &&
1698       wsi->hsync_end == xcb->hsync_end &&
1699       wsi->htotal == xcb->htotal &&
1700       wsi->hskew == xcb->hskew &&
1701       wsi->vdisplay == xcb->height &&
1702       wsi->vsync_start == xcb->vsync_start &&
1703       wsi->vsync_end == xcb->vsync_end &&
1704       wsi->vtotal == xcb->vtotal &&
1705       wsi->vscan <= 1 &&
1706       wsi->flags == xcb->mode_flags;
1707 }
1708
1709 static struct wsi_display_mode *
1710 wsi_display_find_x_mode(struct wsi_device *wsi_device,
1711                         struct wsi_display_connector *connector,
1712                         xcb_randr_mode_info_t *mode)
1713 {
1714    wsi_for_each_display_mode(display_mode, connector) {
1715       if (wsi_display_mode_matches_x(display_mode, mode))
1716          return display_mode;
1717    }
1718    return NULL;
1719 }
1720
1721 static VkResult
1722 wsi_display_register_x_mode(struct wsi_device *wsi_device,
1723                             struct wsi_display_connector *connector,
1724                             xcb_randr_mode_info_t *x_mode,
1725                             bool preferred)
1726 {
1727    struct wsi_display *wsi =
1728       (struct wsi_display *) wsi_device->wsi[VK_ICD_WSI_PLATFORM_DISPLAY];
1729    struct wsi_display_mode *display_mode =
1730       wsi_display_find_x_mode(wsi_device, connector, x_mode);
1731
1732    if (display_mode) {
1733       display_mode->valid = true;
1734       return VK_SUCCESS;
1735    }
1736
1737    display_mode = vk_zalloc(wsi->alloc, sizeof (struct wsi_display_mode),
1738                             8, VK_SYSTEM_ALLOCATION_SCOPE_INSTANCE);
1739    if (!display_mode)
1740       return VK_ERROR_OUT_OF_HOST_MEMORY;
1741
1742    display_mode->connector = connector;
1743    display_mode->valid = true;
1744    display_mode->preferred = preferred;
1745    display_mode->clock = (x_mode->dot_clock + 500) / 1000; /* kHz */
1746    display_mode->hdisplay = x_mode->width;
1747    display_mode->hsync_start = x_mode->hsync_start;
1748    display_mode->hsync_end = x_mode->hsync_end;
1749    display_mode->htotal = x_mode->htotal;
1750    display_mode->hskew = x_mode->hskew;
1751    display_mode->vdisplay = x_mode->height;
1752    display_mode->vsync_start = x_mode->vsync_start;
1753    display_mode->vsync_end = x_mode->vsync_end;
1754    display_mode->vtotal = x_mode->vtotal;
1755    display_mode->vscan = 0;
1756    display_mode->flags = x_mode->mode_flags;
1757
1758    list_addtail(&display_mode->list, &connector->display_modes);
1759    return VK_SUCCESS;
1760 }
1761
1762 static struct wsi_display_connector *
1763 wsi_display_get_output(struct wsi_device *wsi_device,
1764                        xcb_connection_t *connection,
1765                        xcb_randr_output_t output)
1766 {
1767    struct wsi_display *wsi =
1768       (struct wsi_display *) wsi_device->wsi[VK_ICD_WSI_PLATFORM_DISPLAY];
1769    struct wsi_display_connector *connector;
1770    uint32_t connector_id;
1771
1772    xcb_window_t root = wsi_display_output_to_root(connection, output);
1773    if (!root)
1774       return NULL;
1775
1776    /* See if we already have a connector for this output */
1777    connector = wsi_display_find_output(wsi_device, output);
1778
1779    if (!connector) {
1780       xcb_atom_t connector_id_atom = 0;
1781
1782       /*
1783        * Go get the kernel connector ID for this X output
1784        */
1785       connector_id = wsi_display_output_to_connector_id(connection,
1786                                                         &connector_id_atom,
1787                                                         output);
1788
1789       /* Any X server with lease support will have this atom */
1790       if (!connector_id) {
1791          return NULL;
1792       }
1793
1794       /* See if we already have a connector for this id */
1795       connector = wsi_display_find_connector(wsi_device, connector_id);
1796
1797       if (connector == NULL) {
1798          connector = wsi_display_alloc_connector(wsi, connector_id);
1799          if (!connector) {
1800             return NULL;
1801          }
1802          list_addtail(&connector->list, &wsi->connectors);
1803       }
1804       connector->output = output;
1805    }
1806
1807    xcb_randr_get_screen_resources_cookie_t src =
1808       xcb_randr_get_screen_resources(connection, root);
1809    xcb_randr_get_output_info_cookie_t oic =
1810       xcb_randr_get_output_info(connection, output, XCB_CURRENT_TIME);
1811    xcb_randr_get_screen_resources_reply_t *srr =
1812       xcb_randr_get_screen_resources_reply(connection, src, NULL);
1813    xcb_randr_get_output_info_reply_t *oir =
1814       xcb_randr_get_output_info_reply(connection, oic, NULL);
1815
1816    if (oir && srr) {
1817       /* Get X modes and add them */
1818
1819       connector->connected =
1820          oir->connection != XCB_RANDR_CONNECTION_DISCONNECTED;
1821
1822       wsi_display_invalidate_connector_modes(wsi_device, connector);
1823
1824       xcb_randr_mode_t *x_modes = xcb_randr_get_output_info_modes(oir);
1825       for (int m = 0; m < oir->num_modes; m++) {
1826          xcb_randr_mode_info_iterator_t i =
1827             xcb_randr_get_screen_resources_modes_iterator(srr);
1828          while (i.rem) {
1829             xcb_randr_mode_info_t *mi = i.data;
1830             if (mi->id == x_modes[m]) {
1831                VkResult result = wsi_display_register_x_mode(
1832                   wsi_device, connector, mi, m < oir->num_preferred);
1833                if (result != VK_SUCCESS) {
1834                   free(oir);
1835                   free(srr);
1836                   return NULL;
1837                }
1838                break;
1839             }
1840             xcb_randr_mode_info_next(&i);
1841          }
1842       }
1843    }
1844
1845    free(oir);
1846    free(srr);
1847    return connector;
1848 }
1849
1850 static xcb_randr_crtc_t
1851 wsi_display_find_crtc_for_output(xcb_connection_t *connection,
1852                                  xcb_window_t root,
1853                                  xcb_randr_output_t output)
1854 {
1855    xcb_randr_get_screen_resources_cookie_t gsr_c =
1856       xcb_randr_get_screen_resources(connection, root);
1857    xcb_randr_get_screen_resources_reply_t *gsr_r =
1858       xcb_randr_get_screen_resources_reply(connection, gsr_c, NULL);
1859
1860    if (!gsr_r)
1861       return 0;
1862
1863    xcb_randr_crtc_t *rc = xcb_randr_get_screen_resources_crtcs(gsr_r);
1864    xcb_randr_crtc_t idle_crtc = 0;
1865    xcb_randr_crtc_t active_crtc = 0;
1866
1867    /* Find either a crtc already connected to the desired output or idle */
1868    for (int c = 0; active_crtc == 0 && c < gsr_r->num_crtcs; c++) {
1869       xcb_randr_get_crtc_info_cookie_t gci_c =
1870          xcb_randr_get_crtc_info(connection, rc[c], gsr_r->config_timestamp);
1871       xcb_randr_get_crtc_info_reply_t *gci_r =
1872          xcb_randr_get_crtc_info_reply(connection, gci_c, NULL);
1873
1874       if (gci_r) {
1875          if (gci_r->mode) {
1876             int num_outputs = xcb_randr_get_crtc_info_outputs_length(gci_r);
1877             xcb_randr_output_t *outputs =
1878                xcb_randr_get_crtc_info_outputs(gci_r);
1879
1880             if (num_outputs == 1 && outputs[0] == output)
1881                active_crtc = rc[c];
1882
1883          } else if (idle_crtc == 0) {
1884             int num_possible = xcb_randr_get_crtc_info_possible_length(gci_r);
1885             xcb_randr_output_t *possible =
1886                xcb_randr_get_crtc_info_possible(gci_r);
1887
1888             for (int p = 0; p < num_possible; p++)
1889                if (possible[p] == output) {
1890                   idle_crtc = rc[c];
1891                   break;
1892                }
1893          }
1894          free(gci_r);
1895       }
1896    }
1897    free(gsr_r);
1898
1899    if (active_crtc)
1900       return active_crtc;
1901    return idle_crtc;
1902 }
1903
1904 VkResult
1905 wsi_acquire_xlib_display(VkPhysicalDevice physical_device,
1906                          struct wsi_device *wsi_device,
1907                          Display *dpy,
1908                          VkDisplayKHR display)
1909 {
1910    struct wsi_display *wsi =
1911       (struct wsi_display *) wsi_device->wsi[VK_ICD_WSI_PLATFORM_DISPLAY];
1912    xcb_connection_t *connection = XGetXCBConnection(dpy);
1913    struct wsi_display_connector *connector =
1914       wsi_display_connector_from_handle(display);
1915    xcb_window_t root;
1916
1917    /* XXX no support for multiple leases yet */
1918    if (wsi->fd >= 0)
1919       return VK_ERROR_INITIALIZATION_FAILED;
1920
1921    if (!connector->output) {
1922       connector->output = wsi_display_connector_id_to_output(connection,
1923                                                              connector->id);
1924
1925       /* Check and see if we found the output */
1926       if (!connector->output)
1927          return VK_ERROR_INITIALIZATION_FAILED;
1928    }
1929
1930    root = wsi_display_output_to_root(connection, connector->output);
1931    if (!root)
1932       return VK_ERROR_INITIALIZATION_FAILED;
1933
1934    xcb_randr_crtc_t crtc = wsi_display_find_crtc_for_output(connection,
1935                                                             root,
1936                                                             connector->output);
1937
1938    if (!crtc)
1939       return VK_ERROR_INITIALIZATION_FAILED;
1940
1941    xcb_randr_lease_t lease = xcb_generate_id(connection);
1942    xcb_randr_create_lease_cookie_t cl_c =
1943       xcb_randr_create_lease(connection, root, lease, 1, 1,
1944                              &crtc, &connector->output);
1945    xcb_randr_create_lease_reply_t *cl_r =
1946       xcb_randr_create_lease_reply(connection, cl_c, NULL);
1947    if (!cl_r)
1948       return VK_ERROR_INITIALIZATION_FAILED;
1949
1950    int fd = -1;
1951    if (cl_r->nfd > 0) {
1952       int *rcl_f = xcb_randr_create_lease_reply_fds(connection, cl_r);
1953
1954       fd = rcl_f[0];
1955    }
1956    free (cl_r);
1957    if (fd < 0)
1958       return VK_ERROR_INITIALIZATION_FAILED;
1959
1960    wsi->fd = fd;
1961
1962    return VK_SUCCESS;
1963 }
1964
1965 VkResult
1966 wsi_get_randr_output_display(VkPhysicalDevice physical_device,
1967                              struct wsi_device *wsi_device,
1968                              Display *dpy,
1969                              RROutput output,
1970                              VkDisplayKHR *display)
1971 {
1972    xcb_connection_t *connection = XGetXCBConnection(dpy);
1973    struct wsi_display_connector *connector =
1974       wsi_display_get_output(wsi_device, connection, (xcb_randr_output_t) output);
1975
1976    if (connector)
1977       *display = wsi_display_connector_to_handle(connector);
1978    else
1979       *display = NULL;
1980    return VK_SUCCESS;
1981 }
1982
1983 #endif